Originally Posted by HyprLtH20
It is a very strong, hard Urethane resin most commonly used for aircraft and automobile cowling, as well as bowling ball repairs and many other industrial parts. Its solid trust me!
Just making sure. BTW, it's not so much the hardness that you're looking for but rather the structural rigidity. The thing can be hard as a rock but have a rock hit it and take the whole thing out. I know I'm gonna get flammed as being nuts but I'd recommend you do a 3-foot drop test on one at least a dozen times onto asphalt or textured concrete. Can't do it on the smooth stuff as it has the chance to deflect the energy differently. This will give you an idea how much debris it will take. If it cracks right away, it's something for a trailer queen. If the thing bounces back up like nothing happened, awesome, just make sure you recommend people put a flex-adder in the paint.